--- mqtt/src/mqttd_calls.c	2012/05/05 15:16:34	1.2.2.12
+++ mqtt/src/mqttd_calls.c	2012/05/08 13:04:02	1.2.2.13
@@ -97,7 +97,7 @@ cmdSUBSCRIBE(void *srv, int len, void *arg)
 		ioDEBUG(5, "Error:: in msgSUBACK #%d - %s", mqtt_GetErrno(), mqtt_GetError());
 		goto end;
 	}
-	if ((siz = send(sess->sess_sock, sess->sess_buf->msg_base, siz, 0)) == -1)
+	if ((siz = send(sess->sess_sock, sess->sess_buf->msg_base, siz, MSG_NOSIGNAL)) == -1)
 		ioSYSERR(0);
 	else {
 		ioDEBUG(5, "Sended %d bytes.", siz);
@@ -112,12 +112,54 @@ int
 cmdUNSUBSCRIBE(void *srv, int len, void *arg)
 {
 	struct tagSession *sess = (struct tagSession*) arg;
+	mqtt_subscr_t *subs = NULL;
+	int siz = 0;
+	u_short mid = 0;
+	register int i;
+	struct tagStore *store, *tmp;
 
 	ioTRACE(2);
 
 	if (!sess)
 		return -1;
 
+	ioDEBUG(5, "Exec UNSUBSCRIBE session");
+	siz = mqtt_readUNSUBSCRIBE(sess->sess_buf, &mid, &subs);
+	if (siz == -1) {
+		ioDEBUG(5, "Error:: in readUNSUBSCRIBE #%d - %s", mqtt_GetErrno(), mqtt_GetError());
+		return 0;
+	}
+
+	/* del from db */
+	for (i = 0; i < siz; i++) {
+		SLIST_FOREACH_SAFE(store, &sess->sess_subscr, st_node, tmp) {
+			if (store->st_subscr.sub_ret == subs[i].sub_ret && 
+					store->st_subscr.sub_topic.msg_base && 
+					!strcmp(store->st_subscr.sub_topic.msg_base, 
+						subs[i].sub_topic.msg_base)) {
+				SLIST_REMOVE(&sess->sess_subscr, store, tagStore, st_node);
+				free(store);
+			}
+		}
+
+		call.DeletePUB_subscribe(&cfg, pub, subs[i].sub_topic.msg_base, 
+				sess->sess_user, sess->sess_addr);
+	}
+
+	/* send acknowledge */
+	siz = mqtt_msgUNSUBACK(sess->sess_buf, mid);
+	if (siz == -1) {
+		ioDEBUG(5, "Error:: in msgUNSUBACK #%d - %s", mqtt_GetErrno(), mqtt_GetError());
+		goto end;
+	}
+	if ((siz = send(sess->sess_sock, sess->sess_buf->msg_base, siz, MSG_NOSIGNAL)) == -1)
+		ioSYSERR(0);
+	else {
+		ioDEBUG(5, "Sended %d bytes.", siz);
+		memset(sess->sess_buf->msg_base, 0, sess->sess_buf->msg_len);
+	}
+end:
+	mqtt_subFree(&subs);
 	return 0;
 }
 
@@ -138,7 +180,7 @@ cmdPINGREQ(void *srv, int len, void *arg)
 		ioDEBUG(5, "Error:: in msgPINGRESP #%d - %s", mqtt_GetErrno(), mqtt_GetError());
 		return 0;
 	}
-	if ((siz = send(sess->sess_sock, sess->sess_buf->msg_base, siz, 0)) == -1) {
+	if ((siz = send(sess->sess_sock, sess->sess_buf->msg_base, siz, MSG_NOSIGNAL)) == -1) {
 		ioSYSERR(0);
 		return 0;
 	} else {